Wheelock MT4-12-LS Anleitung zur Fehlerbehebung PDF herunterladen (Seite 18)

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Remove 2000 ohm EOL resistor if connected across the zone terminals, and

connect it across the loop wires at the last detector.

3. To supervise power, you MUST use a UL listed End-Of-Line Power

Supervision Relay (i.e. System Sensor No. A77-716B).

POWER

DETECTORS

UL LISTED

COMPATIBLE

CONTROL

PANEL

ZONE

TERMINALS

••

EOL

POWER

SUPERVISION

RELAY

MODULE

A77-716B

•

Four-Wire Detector Circuit

2000Ω

EOLR

4-WIRE SMOKE

DETECTORS

HEAT

DETECTOR

Figure 4: 4-Wire Smoke Detector Connections

COMPATIBLE 4-WIRE SMOKE/COMBUSTION DETECTORS

1412 System Sensor, 4-wire ionization products of combustion

detector

2412 System Sensor, 4-wire photoelectric smoke detector

2412TH System Sensor, 4-wire photoelectric smoke detector

w/135º F (57º C) heat detector

2112/24T System Sensor low-profile 4-wire photoelectric smoke detector

w/135º F (57º C) heat detector

Wiring 2-Wire Smoke Detectors To Zone 5

1. Connect up to 16 of the 2-wire smoke detectors listed below across zone 5

terminals 15 (+) and 16 (–). Observe proper polarity when connecting the

detectors.

2. Connect the EOL resistor at the last detector.

3. See “Programming Hard-Wired Zones” later in this section for a detailed

programming procedure.

Due to the alarm current available on zone 5, only one smoke detector at a

time can be supported in the alarmed state.

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 75 76

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